Burglar-alarm



UNITED STATES ATENT BURGLAR-ALARM.

SPEGIFICATION forming part of Letters Patent No. 450,282, dated .April 14, 1891.

I Application iiled August 25, 1890. Serial No. 362,923. (No model.)

To a/ZZ lah/0111, it may concern.-

Be it known that 1, CRAWFORD R. CANTER- BURY, a citizen of the United States, residing at Brownwood, in the county of Brown and State of Texas, have invented a new and useful Burglar-Alarm, of which the following is a specification.

This invention has relation to burglaralarms; and the objects in view are to provide a cheap, simple, and neatly constructed alarm, adapted and arranged to sound and to bev operated at and by the raising of the window or opening of the door, and simultaneous with the sounding ot` the alarm to produce an illumination.

Various minor objects of the invention will hereinafter appear, and the novel features thereof will be particularly pointed out in the claims.

Referring to the drawings, Figure 1 is a front view of a burglar-alarm constructed in accordance with my invention. Fig. 2 is a side elevation. Fig. 3 is a longitudinal vertical section. Fig. 4 is a detail in perspective of the match-carrying block. Fig. 5 is a detail in perspective of the igniting post and plate. y

Like numerals of reference indicate like parts in all the figures of the drawings.

1 designates a preferably castmetal base, of oblong shape, at the upper right-hand corner of which is cast or secured a post 2. A slight distance below the post 2 there is cast a pair of laterally-disposed lugs 3, which are connected by a pair of transverse bars 4.

Upon the bars 4 there is mounted for reciprocation a sliding match-carriage 5, which is provided with alongitudinal bore or socket 6, designed to receive a match, and with asetscrew 7 entering into the bore. Below the bore are a pair of openings 8, each of which receives one of the rods 4, whereby the carriage is adapted for lateral reciprocations. The carriage is also provided with a perforated lug 9. At the opposite lower corner of the plate there is formed a post l0, and around the same is coiled one end of a springarm 11. One terminal of the spring-arm rests against a stop 12, also cast upon the 5o plate, and the opposite or longer terminal terminates in an eye 13, connected by a rod 14 to the eye and to the eye upon the matchcarriage.

15 designates a springplate, which is mounted upon the post 2, and the tendency of the spring is inward or toward the matchcarriage, said plate having its inner face covered with such a friction-surface as produced by emery, &c.

16 designates a pair of lugs vertically opposite each other, and between the same is mounted a cylindrical lamp or oil-reservoir 17, havingaclosed openinglS, through which oil may be introduced, and terminating at its upper end in a burner 19, having a wick 20, which is located at the end of the throw or path of the match-carriage.

In a perforated ear 2l, cast upon the plate, is pivoted, as at 22, a lever 23, the upper end of which is provided witha shoulder or catch 24. By sliding the carriage to the right upon the Ways or rods 4 and depressing the lower end of the lever just mentioned, such lever at its catch end engages the carriage and prevents the same from returning, which it would do if not thus arrested by reason of the spring-arm heretofore mentioned.

25 designates an upper post provided with threaded openings in its end, and 26 a similar lower post. The upper post is connected to the lower post by means of a yoke or plate 27, secured in position by means of screws 28, fastened through openings in the plate into the ends of the posts 25 and26. The base and the yoke plates are provided with bearings for a winding-shaft 29, upon which is mounted rigidly a ratchet-wheel 30 and a master-gear 31, the latter having its upper side covered by a cap 32, within which is 1ocated a convolute spring 33. The ratchetwheel is engaged bya spring-pawl 34, extending from the upper post 25. The Windingshaft extends beyond the yoke-plate and is threaded, as at 36, and upon the same is mounted a swivel 37, whereby said shaft may be wound, and is held in position by means 0f the holding spring-pawl, heretofore mentioned. Below the winding-shaft is located in journals 37 a shaft 3S, carrying a star or escapement wheel 39, and above the same a pinion 40. The wheel is engaged and operated4 rapidly by the master-gear heretofore w www iv i IOC) described, while the escapement-wheel is engaged and disengaged by an escape-lever 4l, secured to a shaft 42, mounted in bearings 13, formed in the yoke and the base-plate adjacent to the post 2G. The latter-mentioned shaft also carries a trigger or arm 45, which is engaged and prevented from vibrating by a shoulder 46, formed on the inner face and near the lower end of the lever which lever is also provided with a perforation 47, to which the wires or cords from various doors and windows may lead, and previous to connection with the lever pass through a perforation 49, formed in a horizontal guide-post 50. An escape-shaft is provided at its opposite side with a bell-hammer 5l, designed to have intermittent contact upon a bell 52; or it may be between two bells arranged side by side, if so desired.

The operation of the invention is as follows: A match is inserted in the bore 6 of the carriage, and after such insertion the carriage is reci-procated against the tendency of its spring to the opposite side of the device. vl-I'ere the match is adjusted so that its head is in Contact with the frictional surface' of the spring-plate, and the lever 23 is tipped or til-ted so as to engage at the opposite side of the carriage, the tension of the spring being sufficient to maintain the tube in a locked position. The winding-shaft is now rotated so as to snugly coil the spring therea-round. The device is now set, and it needs but the lifting of a window or opening of a door connected With any of the cords or wires 53, which it will be understood lead from the windows and Vdoors to the perforation in the lower end of the lever, to draw thev lower end of the lever out and consequently depress the upper end thereof. Such depression releases the carriage, which is reciprocated to l the opposite side by the spring-arm, and the head of the match dragged across the frictional surface and is lighted, by which time it will be opposite the wick, which latter is also ignited, and illuminates the apartment in which it is located. The trigger of the escapement-shaft is also liberated by the movement of the lever 23, and said shaft is now rapidly rotated by the gearing described, actuated by the spring. As the escapementshaft is oscillated so also is the hammer vibrated against the bell, so that a continuous ringing or alarm is sounded, which lasts until the alarm is reset or the springfrun down and exhausted.

From the above description it will be apparent that I have produced a most useful only automatically sounds a continuous alarm at a disturbance of the windows or doors, but also illuminates the apartment in which it is located, whereby intruders may be readily observed by occupants of the house.

Having described my invention and its op-n eration, what I claim is il. ln a bu rglar-alarm, the combination, with l l l a way, a carriage mounted loosely for recip rocation thereon and adapted to receive a match, of a spring' connected to the carriage, a latch-lever pivoted intermediate its ends and adapted at one end to engage the same against the tendency of the spring, and a friction-plate located in front of the carriage, which latter is adapted to operate against a match, substantially as specified.

ln a burglar-alarm, the combination, with a base, of a way mounted for reciprocation thereon, a match-receiving carriage mounted on the way, a spring for actuating the same, means for locking the carriage against the spring, and a yielding spring-blade arranged in front of the carriage, substantially as l specified.

3. In a burglar-alarm, the combination, with a base-plate having a way, a lamp supported i at one end ot' the Way, and a carriage mounted for reciprocation upon the way and adapted to receive a match, of a yielding ignitingblade arranged parallel to the path of the carriage, a spring-arm having one end coiled about a post, and a rod connecting the end of the arm with the carriage, substantially as specilied.

ln a burglar-alarm, the combination, with a base, posts cast at diagonally-opposite upper and lower corners of the same, hof a pair of standards transversely opposite each otherv located below the upper post, a spring ignit ing-plate mounted on the upper post and extending transverse the base, a pair of rods connecting the standards, a match-carriage having rod-receiving bearings, `a match-receiving bore, an eye and a set-screw, a springwire arm coiled about the lower post and having one of its terminals arranged in rear of a slot formed on the base adjacent to the post, and a rod connecting the eye of the 'car-VV riage with the eye on the free end of the spring-arm, substantially as specified.

ln aburglaralarm, the combination, with a reciprocating carriage, a base having Ways for supporting the same, and a spring for throwing the carriage, said carriage being adapted to receive a match, of an ignitingplate, a pivoted lever having a latch end for engaging the carriage, and an eye in its opposite end, and a perforated guide-post extending beyond the perforated end of the lever and adapted to receive cords or wires leading from windows, doors, dsc., to said perforated endsubstantially as specified.

l. ln a burglar-alarm, the combination, with a base having posts arranged Aopposite each other and an alarm-bell, of a yoke-plate conand efcient burglar-alarm, one which not necting the posts, a windingshaft journaled upon the yoke-plate, a spring, ratchet, and master-gear mounted on the shaft, a pawl for the ratchet, an escape-Wheel and its shaft actuated by the master-wheel and journaled in the yoke-plate and base, an escape-lever and its shaft journaled in the yoke-plate and base, a bell-hammer secured to the said shaft,

a trigger also secured to the shaft, a pivoted lever secured to the base and ashoulder on said lever adapted to engage the trigger when the lever is in a set position, substantially as specified.

7. In abnrgla1-ala1m,the combination, with a base having transverse ways, a match-carrying carriage mounted on the ways, an igniting-plate arranged parallel to the path of the carriage, a spring arm connected to and adapted to throw the carriage, and a lamp having its burner located at the end of the path of the carriage, of an esoape-shaft, a bell, a hammer leading from the shaft to the bell, a trigger extending from'the shaft, a winding mechanism for actuating the escape-shaft, and a lever pivoted at one side of the winding mechanism and adapted at its latch end to CRAWFORD Rl. CANTERBURY.

Witnesses:

B. G. SWEET, J. S. MGVHORTER. 

